[CentOS] luks encrypted - tell at boot to skip/ignore it - how?

Sat Jan 30 14:48:45 UTC 2021
lejeczek <peljasz at yahoo.co.uk>

Hi guys.

How to tell grub/kernel to ignore, skip either all or a 
specific block device which is luks-ecrypted - would anybody 
I have a box (kvm) which had a "secondary" luks-encrypted 
disk which now is detached and Centos just hangs @boot 
waiting for that disk.
many thanks, L.